Automatic power-generating device for decorative lamps

ABSTRACT

An automatic power-generating device for decorative lamps has a weight-distributing plate or a heavy weight inside actuated by rotation of an exterior object to produce an eccentric force (a centrifugal force) and rotate together with a coil and a magnet. The coil and the magnet rotate at different speeds due to the law of inertia to force a magnetic field produce vicissitudes and generate an inductive current (based on a principle of electromagnetic induction) to supply decorative lamps with power for lighting, able to save electricity and convenient to be installed.

BACKGROUND OF THE INVENTION

[0001] This invention relates to an automatic power-generating device for decorative lamps, particularly to one in which a weight-distributing plate or a heavy weight is actuated by rotation of an exterior object to produce an eccentric force (a centrifugal force) and rotate together with a magnet to force a magnetic field produce vicissitudes and generate an inductive current (based on a principle of electromagnetic induction) to supply decorative lamps with power for lighting, able to economize electricity and convenient to be installed.

[0002] Conventionally, a power-generating device is powered by a battery or a generator and connected with a decorative lamp by an electric wire to light up the decorative lamp.

[0003] Based on the foresaid principle that the stator and the rotor interact to make up an electromotive force and produce electrical energy, this invention is newly designed in structure, able to economize electricity, convenient in use and impossible to be damaged.

SUMMARY OF THE INVENTION

[0004] This invention is devised to offer an automatic power-generating device for decorative lamps, in which a weight-distributing plate or a heavy weight is actuated by the rotation of an exterior object to produce an eccentric force (centrifugal force) and rotate together with a coil and a magnet, which rotate at different speeds due to the law of inertia to force a magnetic field produce vicissitudes and generate an inductive current (based on a principle of electromagnetic induction) to supply decorative lamps with power for lighting, able to economize electricity and convenient to be installed.

BRIEF DESCRIPTION OF DRAWINGS

[0005] This invention will be better understood by referring to the accompanying drawings, wherein:

[0006]FIG. 1 is an exploded perspective view of a first embodiment of an automatic power-generating device for decorative lamps in the present invention:

[0007]FIG. 2 is an exploded perspective view of a second embodiment of the automatic power-generating device for decorative lamps in the present invention:

[0008]FIG. 3 is a side cross-sectional view of the automatic power-generating device for decorative lamps in the present invention:

[0009]FIG. 4 is a side view of the automatic power-generating device for decorative lamps, assembled on a wheel rim cover in the present invention:

[0010]FIG. 5 is front view of the second embodiment of the automatic power-generating device for decorative lamps in an operating condition in the present invention:

[0011]FIG. 6 is a front view of the automatic power-gene rating device for decorative lamps, assembled on the wheel rim cover of an automobile in the present invention:

[0012]FIG. 7 is a front view of the automatic power-generating device for decorative lamps, assembled on the wheel rim cover of a motorcycle in the present invention:

[0013]FIG. 8 is a front view of the automatic power-generating device for decorative lamps, assembled on the wheel rim cover of a bicycle in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0014] A first and a second preferred embodiment of an automatic power-generating device 1, 1′ for decorative lamps in the present invention, as shown in FIGS. 1 and 2, includes a left cover 2, a bearing 4, an annular coil 5, a magnet holder 6, a permanent magnet 7, a weight-distributing plate 8 (a heavy weight 8′), a center shaft 9 and a right cover 3 as main components combined together.

[0015] The left cover 2 is provided with a plurality of small holes around the outer circumferential edge, and a bearing holder 22 and a coil holder 23 in the interior. The coil holder 23 is bored with a notch 24 for receiving the projection 51 of the annular coil 5.

[0016] The magnet holder 6 has an extending portion 61 with a central shaft hole 62 protruding outward from the center.

[0017] The weight-distributing plate 8 or the heavy weight 8′ has a combining portion 81, 81′ protruding leftward and a through hole 82, 82′ in the center.

[0018] The right cover 3 is provided with a bearing holder 31 in the central interior.

[0019] In assembling, as shown in FIG. 3, firstly, the center shaft 9 is inserted in the central shaft hole 62 of the magnet holder 6, the permanent magnet 7 is fitted around the outer circumferential edge of the magnet holder 6, and the combining portion 81, 81′ of the weight-distributing plate 8 or the heavy weight 8′ is received in the accommodating space 63 of the magnet holder 6. Next, the annular coil 5 has its projection 51 engaged firmly with the notch 24 of the coil holder 23 within the left cover 2, and the electric wires connected with the annular coil 5 are respectively inserted out of the small holes 21 around the outer peripheral edge of the left cover 2 to be respectively connected with decorative lamps 10. Then, the left bearing 4 is positioned in the bearing holder 22, and the center shaft 9 has its left end fitted in the left bearing 4 and its right end fitted in the right bearing 4, which is then positioned in the bearing holder 31 within the right cover 3. At this time, the left and the right cover 2, 3, by means of high frequency welding, can be closed integral together, with its interior impossible to be invaded by dust or vapor and damaged or fall off. The power-generating device 1, 1′ in this invention is able to be employed independently, or mounted on or adhered to a wheel rim cover 20, as shown in FIG. 4, capable of economizing electricity and convenient to be installed.

[0020] In using and operating, as shown in FIG. 5, when the power-generating device 1 is actuated to rotate by an exterior force, the weight-distributing plate 8 or the heavy block 8′ fitted around the center shaft 9 will be forced to rotate by means of an eccentric force (a centrifugal force).

[0021] Simultaneously, the left and the right bearing 4 pivotally fitted around the center shaft 9 and respectively received in the bearing holder 22, 31 of the left and the right cover 2, 3 will interact to actuate the weight-distributing plate 8 or the heavy block 8′ and the left and the right cover 2, 3 to rotate at different speeds. At this time, the annular coil 5 received in the interior of the left cover 2 and the permanent magnet 7 fitted around the center shaft 9 will rotate at different speeds due to the law of inertia to force the magnetic field produce vicissitudes and generate an inductive current (based on a principle of electromagnetic induction) to supply decorative lamps 10 with power for lighting through electric wires.

[0022] The automatic power-generating device in the invention can be assembled on the wheel rim cover 20 of an automobile 30, a motorcycle 40 or a bicycle 50, as shown in FIGS. 6, 7 and 8. Thus, when the car runs forward, the power-generating device 1 will rotate and generate electricity for lighting the decorative lamps 10 assembled on the wheel rim cover 20, acquiring effect of multi-colored decoration. Besides, this device can also be installed on a rotatable toy, such as a flying disk or the like.

[0023] While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention. 

I claim:
 1. An automatic power-generating device for decorative lamps comprising: A left cover provided with a bearing holder and a coil holder in its interior, said bearing holder receiving a left bearing and said coil bolder receiving an annular coil, said left cover bored with a plurality of small holes around an outer circumferential edge, electric wire s connected with said annular coil and extending out of said small holes to be connected with decorative lamps: A right cover provided with a bearing bolder in the central interior for receiving a right bearing therein: A center shaft positioned between said left and said right cover, said center shaft fitted around with a magnet holder, a permanent magnet mounted around an outer peripheral edge of said magnet holder: and Characterized by a weight-distributing plate having a combining portion extending leftward, said combining portion firmly fitting in an accommodating space in the central portion of said magnet holder, said center shaft having its left and right end respectively fitted with said left and said right bearing, said center shaft and said left and said right bearing together positioned in the closed space defined by said left and said right cover, said weight-distributing plate in said power-generating device actuated to rotate by rotation of an exterior object to produce an eccentric force and rotate, said weight-distributing plate rotating together with said annular coil and said magnet, said annular coil and said magnet rotating at different speeds due to the law of inertia, said difference of rotating speeds between said annular coil and said magnet forcing the magnetic field produce vicissitudes and generate an inductive current to supply power.
 2. The automatic power-generating device for decorative lamps as claimed in claim 1, wherein said weight-distributing plate is a heavy weight. 